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Alstar 1.25' 45-Degree Diagonal Prism Optical Prism Inside Rather Than a Mirror which Makes Your Image Clear and Sharp

4.8 (3) Write Review
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$23.99

$ 10 .99 $10.99

In Stock

About this item

  • Diagonal Prism Optical Prism inside rather than a mirror which makes your image clear and sharp
  • 1.25 inch 45 degree mirror star diagonal for any telescope with 1.25 inch connector ;not suitable for Newtonians
  • More comfortable viewing orientation as you observe from above; filter thread for any 1.25 inch filter;. Accepts standard 1.25 inch eyepieces
  • This is a great diagonal for daytime terrestrial use and night time astronomy applications for telescopes or spotting scopes
  • Protective coating on the mirror to ensure a long life; metal barrel; for secure seating in the focuser


Product Description

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Robert G.
Reviewed in the United States on May 19, 2023
It works just as it suppose to.cant beat the price5 stars highly recommend
DustyG
Reviewed in the United States on January 25, 2023
I had to replace the diagonal prism that came with my telescope because I accidentally put a hole in it. I chose this one, and I'm very pleased with the quality. This works perfectly with my telescope. I would definitely recommend it.
Lewis Balentine
Reviewed in the United States on November 29, 2020
I will probably update this review after I have had some more experience withit. My main reason for purchasing this particular Inverting Prism was that of all the 45 degree prisms on Amazon this was the only one illustrated with removable eyepiece tubes. I want to replace the eyepiece holder with a microscope tube so that I can use microscope eyepieces and an eyepiece projection camera adapter. Best I can determine these tubes have 28mm diameter by 1mm pitch threads with a maximum of three threads.